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CHO Flashcards

(72 cards)

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1
Q

Glyceraldehyde is ….

A

Aldotrioses

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2
Q

Dihydroxyacetone is …….

A

Ketotrioses

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3
Q

Glyceraldehyde is monosaccharides containing 5 carbon atoms (T or F)

A

F containing 3 carbon atoms

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4
Q

Duhydroxyacetone is monosaccharide containing 7 carbo atoms (T or F)

A

F 3 carbon atoms

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5
Q

Erythrose is ….

A

Aldotetroses

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6
Q

Erythrulose is ….

A

Ketotetroses

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7
Q

The erythrose is containing …… carbon atoms

A

4

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8
Q

Give an examples about aldopentoses.

A

Ribose
Arabinose
Xylose
Lyxose

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9
Q

Give an examples about ketopentoses.

A

Ribulose

Xylulose

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10
Q

The ribose is an example on…..

A

Aldopentoses

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11
Q

Arabinose is an example on …..

A

Aldopentoses

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12
Q

Xylose is an example on ….

A

Aldopentoses

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13
Q

Lyxose is an example in ….

A

Aldopentoses

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14
Q

Ribulose is an example on …

A

Ketotpentose

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15
Q

Xylulose is an example on…..

A

Ketotpentoses

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16
Q

It is enter in the structure of nucleic acid RNA and DNA

A

Ribose and deoxyribose

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17
Q

Enters in the structure of high energy phosphate compounds (ATP, GTP)

A

Ribose

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18
Q

Enters in the structure of coenzymes NAD, NADP and flavoproteins.

A

Ribose

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19
Q

Are constitueunts of glycoprotien in plant and animal cell.

A

Arabinose and xylose

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20
Q

Is constituent of lyxoflavin isolated in human heart muscle.

A

Lyxose

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21
Q

Glocuse is …

A

Aldohexos

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22
Q

Galactose is ….

A

Aldohexos

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23
Q

Mannose is ….

A

Aldohexose

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24
Q

Give an examples on aldohexose.

A

Glucose
Galactose
Mannose

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25
Fructose is....
Ketohexose
26
The major source of energy in mammals
Glucose
27
Tha main suger in semen.
Fructose
28
Is essential for synthesis of lactose in lactating mammary glands to make milk suger
Galactose
29
It present as constituent of many glycoproteins
Mannose
30
Is formed in hexose monophosphate shunt.
Sedoheptulose
31
Is asymmetric carbon atom obtained from active carbonyl suger group, carbon number 1 in aldoses and carbon number 2 in ketoses
Anomeric carbon
32
Are isomers obtained from the change of position of hydroxyl attached to the anomeric carbon
Anomers
33
If the remaining -OH is on the right side it is .......
Alpha-suger
34
Cyclic structure of sugers may be present in the form of haworth
Haworth form
35
.....% of glucopyranose are present as a-form
36%
36
Are suger in which one of the hydroxyl groups gas been replaced by hydrogen atom
Deoxysugers e.g. Deoxyribose
37
Monosaccharids, both aldoses and ketoses may be reduced at carbonyl carbon to the corresponding alcohols.
Suger alcohols
38
Glucose reduced to......
Sorbitol
39
Mannose reduced to ......
Mannitol
40
Fructose reduced to ......
Mannitol or sorbitol.
41
What are the classification of suger acids?
1 -Aldonic acids. 2- Uronic acid. 3-Aldaric acid.
42
Oxidation of carbonyl carbon to carboxylic group gives .... | Give an ex.
Aldonic acid | E.g. glucose is oxidized into gluconic acid.
43
Oxidation of last hydroxyl carbon will give .....
Uronic acid
44
Dicarboxylic acids produced by oxidation of both carbonyl group and last hydroxyl group into carboxylic group.
Alderic acid.
45
What is the general formula of Disaccharides?
Cn(H2O)n-1
46
What are the most important disaccharides?
``` 1-maltose 2- isomaltose 3-cellobiose 4-lactose 5-sucrose ```
47
Maltose is formed of .................... linked by .............bond
2 a-glucose molecules | a-1-4 glycosidic bond
48
Produced during digestion of starch by amylase enzyme
Maltose
49
Containing free carbonyl (aldehyde) group, so it is reducing suger.
Maltose
50
Is formed of 2 a- glucose molecules linked by a- 1-6glycosidic bond.
Isomaltose
51
Is formed of B- glucose + B-galactose linked by B1-4 linkage
Lactose
52
Lactose formed of ..........+.......... linked by........
B- glucose+B-galactose | By B 1-4 linkage
53
Sucrose is formed of .......+.......... linked by..........
a- glucose + B- fructose | Linked by a1-B2 glycosidic bond
54
Suger have no free carbonyl group, not reducing suger.
Sucrose.
55
Derived from cellulose hydrolysis
Cellobiose
56
Cellobiose is formed od ............. linked by ...........
2 B-glucose | Linked by B 1-4 glycosidic bond
57
Composed of one type of monosaccharide
Homopolysaccharide
58
Made up of different type of monosaccharides
Heteropolysaccharides
59
The inner layer of starch is ....
Amylose
60
Inner layer of starch constitutes ........% of granule and formed of ................ of glucose units linked by .............
15-20% Non branching helical stracture a-1-4 glycosidic bonds.
61
Outer layer of starch is ............ which constitute ...........of granule and formed of ........... . Each chain is composed of .............. units linked by ............and ..........at the .......
``` Amylopectin 80-85% Branched chains 24-30 glucose units a 1-4 and a 1-6 glycosidic bond The branching point ```
62
............ is Highly branched chain homopolysaccharides.
Glycogen
63
The major form of stractural carbohydrates in plant, in plant cell walls Linear polymer of B- glycopyranose linked by B 1-4 glucosidic linkage.
Cellulose
64
All GAGs are extracellular except .......
Heparin
65
All GAGs are contain sulfur except ......
Hyaluronic acid
66
All GAGs contain uronic acid except
Keratan sulfate
67
The most abundant GAGs in synovial fluid, vitreous humor of eyes and extracellula matrix of loose connective tissue.
Hyaluronic acid
68
It is present in cartilage, bone, heart valves.
Chondroitin sulphate
69
Highly acidic anticoagulant
Heparin
70
Present in sclera of eye and important for overall shape of eyes
Dermatan sulphate
71
It is a minor constituents of proteoglycans.
Keratan sulphate.
72
Are long unbranched polysaccharides containing a repeated disaccharide units
GAGs

Biochemistry (2 decks)

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